M. Zito, D. Tiberio, and P.J. Brennan (USA)
Stretch Tolerance, Stretching, Straight leg raising
Objective: To determine the effects of a single bout of five repetitions of passive stretching at a predetermined end-point on straight leg raise (SLR) range of motion (ROM), passive force, and stretch tolerance. Design: A single group pretest posttest design was used. Setting: A university laboratory Participants: Twelve healthy volunteers without pain or dysfunction of SLR of the tested lower extremity or contributing regions served as subjects. Intervention: A one bout of five repetitions at a pre determined maximal stretch tolerance intensity was the treatment intervention. Main Outcome Measures: A Borg scale, hand held dynamometer, and universal goniometer were used to measure stretch tolerance, passive force and ROM respectively. Results: Our stretch intervention resulted in an acute increase in SLR ROM. Moreover, stretch tolerance increased at the predetermined maximal stretch tolerance position while the passive force at the same initial SLR position was unchanged. Conclusion: Stretch tolerance should be considered a contributing factor in lengthening responses to passive stretching.
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